Heater.



, R. C. STEVENS.

HEATER.

APPLICATION FILED AMM, 1912.

im @25,45% l Patented July 7,1914.

SHEETS-SHEET V1.

WITNESSES:

E. G. STEVENS.v HEATER. APPLIOALION FILED APR5, 1912,

Patented July 7, 19M

3 SHEETSSHEBT 2,

LEEEAEEG E ST ATTORNEY srarns r rnisr n notam c. s'rnvnns, or gears, PnniisYLvANIA.

HEATER. i

incassa.

i T all whom it may concern:

. iication, my inventionconsists `in'the ,con-y caused to pass a number Be it known that l, ROBERT C. STEVENS,

a lcitizen of the United States, residing at Erie, in the county of Erie and ,State of`v Pennsylvania, have invented certain new and useful .Improvementsin Heaters; and I do yhereby declare the following to-be a full, clear, and exact description of the invention,

such as will'enable others skilled in the art to which 'it appertains to make and use the same.

This invention is a heater and relates incre particnlarly :to water heaters of the eneral class in which water is circulated rou h the heater while the space surrounding .t e

water is ,filled with steam, the exhaustfrom gas engi-nes, or other heatinginedium, .the

- construction, of the heater being such. that the water l is divided into thin layers and l of times through the length of the heater.

The object .of my improvement is to pro- .vide a sectional heater that can .be 'made of `cast iron, and that shagll be capable of being used either as a vertical or horizontal .heater without change of construction'.

A further object is to so construct the. heater sections that they are easy todmold," and of such form las to procure .sound castings.

.A A further object his to so brace the walls of the heating surfaces that the heater will.y

withstand high water pressure.

Another object is .to so construct the heater as to 'obviate the use ofheating tubes and of the cover plates heretofore required'.`

on the waterspaces ofcast ironheaters.

' The parts are so arranged that'very little'.` machine' work is required, and theheater is4v of comparatively light weight `for a given; I.heating capacity.

4A further object is itosc construct the heater that it can be easily enlarged and the capacity thereby increased vby adding new sections as required;

My invent-ion also includes a construction of .the heads of the heater sothat the inlet and outlet steam connections can be easily attached t-o the heater whether the steam connections of the heater-be placed vertically orl horizontally.

With lthese and certain vother objects in View' which will appear-laterin the speci-` structions and devices described and claimed and .the equivalents thereof.

Specification of Letters Patent. Application filed April 5, 19,12. Serial No. 6885662.

' 1; Fig. d shows'the upper face of half of one of the heater sections; Fig. 5 is a View of the inner face of one of the heater ends or heads; Fig. 6 isa section taken on the broken line v6--6 of Fig. 5 Fig. 7 is a section taken on the line 7 7 of Fig. 5; Fig. 8 is a section on the line 8 8 of Fig. 5; Fig. 9 is a view of the inner face of the opposite head I; Fig. 10 is `a'section on the broken line 10.-l0 of Fig. 9; and Fig. 11 is an exterior view of the head shown in Figs. 9 and 10.

.The shell of the heater is formed of one or more removable sectionsA 1 If more than one is used, they are secured together end to end by bolts or otherwise, as shown in Fig. 1. Each of thesections is formed in a single piece, preferably Inadeof cast iron. At the two ends of the assembled 'sections are secured heads 2,l 3. One. of these heads as-2 is arranged to form a stearnchamber 4. andis vprovided with a number of water return passages 5. The lconstruction of the same will .be explainedlater. The other head 3 is similarly formed with a steam chamber 6 and water return passages 7 and in addition'is provided with water pockets 8 and9 communicating respectively with the water inlet 1S and outlet 19. The head 2 has a Isteam inlet 10 and head 3 has a steam voutlet 1-1, or vice versa. Each of the mid* jdle'- sections is preferably formed with a rece tangular or other shapedshell 12 having end flanges 13 and each section is divided by a series of parallel partitions 14 extending lengthwise from end to end, into a series of parallel steam passages 15 and water passages 16, the ends of the artitions of each section registering'vwith t ose of the next adjacent section, to form continuous partitions extending from head to head.

The partitions 14 are preferably stiffened Iby means of spacing braces 17 preferably cast integral with the partitions and extending across the passages 15 and 1G.

Patented July '7, '1914.

To assemblethe heater the desired nurn. j ber 'of sections l are arranged fend to end ings registering, and the sections are then 'bolted together, providing parallel series of wat-er and steam passages that extend from end to end of the assembled structure, the steam and water passages alternating. The

end lsections or' heads are then bolted inplace. Onev of these heads 2, which serves -as a top head when the heater is to be used as a vertical heater, has its openings `so arranged that all of the steam passages 15 leadinto its steam chamber, and all of the water passages 16 lead into its water return passages 5. Each of these water passages 5 communicates with two of the water passages 16, as shown in Fig. 1, so that water iviowingv through one of theA water passages 16 will turn in passage 5 and flow through the next succeeding water passage in the opposite direction. The water passage 5 is not in communication with the steam passages. Similarly, the other head, which in the case of a vertical heater may be designated the bottom head 3, has its steam chamber 6 in communication with each of the steam passages 15 and its water return passages 7 -are respectively in communication with the water passages 16 of the sections 1, Ain which the direction of flow is again reversed.

I 'prefer to make the pocket 5 of'less length than the width of passages 15 and 16, so that it extends onlypart way vacross the head, as shown in Figs. 7 and 8, there'- by leavingla part of the length of steam passage 15 uncovered to permit free iiow of steam from chamber 4t into all of the steam passages. Similarly, pocl'et 7 is preferably of less length than thepassages 15 and 16.

In operation, water is admitted to the inlet 18, passes through pocket 8, thence up through the corresponding water passage 16 to the top head'where it enters the water return passage 5 and thence travels down through the next water passage 16 into the water return passage 7 of the bottom head, thence upward again to the upper head and down to the lower. head. This travel may be repeated asma-ny times as desired, depending upon the number of water passages provided. In the form illustrated I have shown six such passages, so that the water, travels the length of the heater six times before it finally enters the water outlet pocket 9 and passes out through the outlet 19.'

. Steam introduced through the inlet 10 of the top head 2 passes Jfrom the steam chamber l simultaneously through the steam passages 15 .and down tothe steam chamber 6 of the head 3, thence through the steam outlet 11.v The water of condensation is drawn out through the drain 21, when the heater is in the horizontal position. The openings 18,19 and 20 are provided'for blowing oit sediment, though 18and 19 serve the additional purpose of water inlet and outlet, as previously described.

' `VVhile I have for convenience described the passages'l as steam and 16 as water passages, it will be understood that the heater is intended to employ any other heating medium, as the exhaust from gas engines andthe like; and any other iiuid to be heated. It may alsobe employed as a cooler or condenser.v v

Having described my invention, what I claim and desire to secure by Letters Patent, 1s:-

l. In a heater, the combination of a plurality of'shell sections, each comprising a plurality of parallel longitudinally disposed partitions extending from side to side thereof, integral with said shell and dividing said shell into alternating steam and water passages; of heads secured to the outer end of the extreme shell sections, each `head formed with a steam opening and having a steam chamber, said chamber communieat ing with each of the steam passages; said head formed-'with integral water pockets, each of said pockets having one end in communication with one of'said waterpassages, the opposite end of said pocket communieating with the next succeedingwater passage; all of said water passages being connectediin continuous series, but out of communication withV the intermediate steam passages; a water inlet at one end of the series of water passages, a water outlet `at the opposite end of said series; said series of passages adapted to conduct water in a thin sheet along the walls of said steam passages from one end to end of the heater, the water being guided alternately in opposite directions, for the purposes set forth.

2. In a heater formed of a plurality of shell-sections arranged end-toend and heads secured to the extreme sections; each section formed of la single piece of cast metal and comprising a rectangular outer shell and a plurality of flat partitions arranged lengthwise said sections, saidpartitions being parallel and extending from side to side across said shell and a plurality of transverse spacing braces connecting` adjacent partitions and cast integral therewith;

3. In a heater formed oi -a plurality ofshell sections larranged end to end and heads secured to the extreme sections; each section formed of a single piece of cast metal and comprising a rectangular outer shell anda plurality of Hat partitionsarranged lengthwise said section, said partitions being parallel and extending from side to side across said shell, and a plurality of transverse spacing braces connecting adjacent partitions and cast integral therewith; each of said headsformed with a steam opening and having a steam chamber, the steam chamber of one head communicating directly with the steam chamber of the oppotions; each head formed with a plurality of water pockets,v each pocket communicating with they water passage formed between alternate pairs of said parallel partitions, said pockets connecting the water passages 10 n series to form a single conduit to guide water in a thin sheet along the walls of said steam passagesl alternately in opposite directions from end to end of the heater, for the n `purposes set forth.

In testimon whereof, I affix my signature in presence o two witnesses.

' ROBERT C. STEVENS.

Vitnesses: 4-

THos. P. BYRNES, IDA ORR-BYRNES. 

